Stop motion device for strand manipulating apparatus



Nov. 3, 1953 R. E. SOLLIDAY ET AL STOP MOTION DEVICE FOR STRANDMANIPULATING APPARATUS 4 Sheets-Sheet 1 Filed Aug. 25, 1950 RAYMOND E.SOLLIDAY SAMUEL A STEERE FIG. 2

;TORNEY Nov. 3, 1953 'R. E. SOLLIDAY ET AL STOP MOTION DEVICE FOR STRANDMANIPULATING APPARATUS 4 Sheets-Sheet 2 Filed Aug. 23, 1950 RAYMOND E.SOLLIDAIY. SAMUEL A. STEERE FIG. 3

ATTOR N EY Nov. 3, 1953 R. E. SOLLIDAY ET AL 2,657,451

STOP MOTION DEVICE FOR STRAND MANIPULATING APPARATUS Filed Aug. 25, 19504 Sheets-Sheet 3 gwucwvfm FIG. 4 RAYMOND E. SOLLIDAY SAMUEL A. S TEERE 4ATTORNEY Nov. 3, 1953 R. E. SOLLIDAY ET AL 2,657,451

STOP MOTION DEVICE FOR STRAND MANIPULATING APPARATUS Filed Aug. 23, 1950A 4 Sheets-Sheet 4 INVENTORS FIG. l2 RAYMOND E. SOLLIDAY BY SAMUEL A.STEERE ATTORNEY ii e li s- 1 f wj ai .41 aw it.

Patented Nov. 3, 1953 .s'roPv MOTION DEVICE FOR STRAND NIBULATING'APPARATUS Raymond E. Solliday and Samuel A. Steere,

Akron, Ohio, 'assignqrs to Wihgfoot Corporation nkro'n, a, corporationpffnelawar e nn q e is 23, 1,950 ssr a p o- .f

14 Qlaims.

The; present invention .relates ,to a v novel form v of stop-motiondevice for use vin,apparatus for i the manipulation of, .o'rd, thread,andiother simi- 1 ;v filamentous material of substantiallyucontinuouslengths. ,l/loreparticularly, the;invention pertains to a means 'for.instantlystoppi l' I cord winding ortreating ignzfi chinery in which the"cord being treated is temporarily stored in m ndicate pattern or s ries1 windings' whi'ch itlwould ,be necessary to-r reinthe fevent of cordbreakage or a supply ail u're unless the operation of :theapparatus ;is-;-guicl ly arrested.

ltis anobjectof the present invention to provide a form of to motion Whic h is actuated bythe cor a -i ea sihesupp r u t ontrol the arrestingof he cord pr sing apparatuswhenever the; s pply ortheco'rd '.breaks.

It is anothen object of the pr esentv invention to out delaytoarrestthe, operation of the cord prp c- \essing ap ara us-th re y; infi iag i iina h ze hdrawa iih o d ir m the apparatus to an ext ent suchthat piarti'al'f re- ,glthreading ofithe apparatus becomes necessary.

Other obj ects and advantages will become, apren as, e ai -i i mi l @9 1i 0f device embodying the principles of the present .invention proceeds.

, l flt c m anyin d ravvipis,.-F g. 1 repr .:sent s an end elevation ofa cord treatin ap1 }),aragtus with parts in section and broken away.Fig. I 2 is a partial plan view at an enlarged s'cale :ofa portionoitheapparatusoi Fig. 1 with parts removed and hroken away for the sake oftcle ara .ness. Fig. 3 is ;an ..elevation of theportion of the t s.il uratedin Ei Zshow g t e-stopmotion of the presentinvention in operatingrelation to h artst e o d reatin a paratu Fig. 4 corresponds generallyto Fig. 3,;butisho ws the stopmotion-releas ed. Fig. 5 is an .end v ew'of r, the,apparatus of asseen from the line 5 5 therein with p rtsrokenaway Fig dis a ver- -ticalsectiontaken along -the lin..16,6 in Fig, 4with parts ,in,.e1e.vation. Fig; 7' is .an. nlarged viewof oneoftherelements ofthe sto H f with parts, broken ,away. Fig. 8 is.anoenlarged .acut-away vi w f he. w ndi g P0 1 pn,whi,ch .the .finishedcord is collected.

i 9 l ra e anoth r fo m (ri stop-motion embodying thefeatures ofthe-presen inve tion and. corresponds generally to: the devicedo Big. v3h r s. brq s az w jq elevation of the device of l 'ig... Q asiseen romthe apparatus shown in Fig. 9,from the line I I- ll therein. Fig. 12 isan enlarged plan View of the stop-motion of Fig. '9 correspondinggenerally to Figi ll, but with the parts thereof in their'respective'positions assumed when the cord'processing operation is halted.

In Fig. l of the drawings, the reference numeral .1 identifie'sfa cord'treating apparatus generally ,for the'tr'eatment of c'ord, thread, orthe like. The cord treating apparatus l comprises a base portion} onwhich is mounted a vertically extending support structure A plurality ofsupporting brackets l are mounted on the several support structures'3 soas to carry spindle railifextendin'g in longitudinal re- [lation alongthe cord treating apparatus I. The spindle railv 5 has a plurality ofspindles 6 thereon, each of which serves to, support a supply package(from which an end 3 of cord, thread, or the like is withdrawn forprocessing treatmentin the cord treating apparatus l. The cord end B,which will ibe referred to hereinafter simply as cord, is directedthrough a devious path of travel in the course of its treatment. Sincethis v feature does not constitute the subject matter of thepresentinvention, only on such cord path will be described in part, but itshould be "understood that the apparatus of the present inlvention haseqtral adaptability to any similar 'form of' path which ay be employedin conducting the cord 8 through the cord treating apparatus I.

Thecord treating apparatus 1 is provided with an 'angle member] 9extending longitudinally thereof and supported at its ends and atintermediate spaced points by a plurality of supports .lll'jwhich aremounted on the base portion 2.

idlrfrolls "l2, .I3, .14, and.- I5 which are mounted in ireely rotatablerelation The .several'idler .rollsserve to provide a means of guidingthcord Ll-both before andaftertreatment.

An extension .lfi isisecured ,to the uppermost end o f the verticalmember 'Il ahdprovides a mounting for a "pai'rfof spaced 'pigtail guidesf I l and ,I 8. From its path about .the' several grooved "'fidleryrollsI2 tol5;finclu sive, the cord 8 is passed.

lto ajgrooved, guide 1 011,] 9 which directs the cord Q r' ahd. on ct;wih t es a e of asc roll 20.1, ;1'I:hefScotch roll 20' is ,SIPDOrted'atitS acc /345i 3 ends in such fashion that it is partiallyimmersed in a supply 2| of treating liquor such, for example, as asuitabl adhesive or bonding agent to facilitate the adherence of thecord with rubber or other like plastic material.

The treating liquid 2| is disposed in a trough 22 which is suspendedfrom the base portion 2 of the cord treating apparatus l as by means ofthe supports 23 secured to the base portion 2. It will be understoodthat the treating liquid 2 I, by virtue of the fact that the trough 22extends lengthwise of the cord treating apparatus I, will serve tosupply a treating medium for all of the cord treating stationstherealong. A wiper 24 supported by the trough 22 is disposed in contactwith the cord 8 after it leaves the Scotch roll for the purpose ofremoving from the cord any excess treating liquor to preventcontamination of the several parts of the apparatus.

The cord 8, after the application of the treating liquor 21 iscompleted, is again guided over one or more of the grooved idler rollsl2, i3, is, and [5, after which it is directed to a series of cordmanipulating devices identified generally in a Fig. 1 by the referencecharacter 25. The cord manipulating devices 25 may include suitableidler guide rolls, a stretching cone, a heated flared drum, and asuitable driving mechanism, all of which will be described in greaterdetail hereinafter.

The cord manipulating devices 25 are advantageously supported on apivotally mounted means which takes the form of the swinging arm 26. Thearm 26 is appropriately mounted upon a longitudinally extending rod 2'!which is supported in fixed relation to the base portion 2 of the cordtreating apparatus 1 by a plurality of supports 23. Similar mountingmeans are provided for each of the several cord treating stations alongthe cord treating apparatus 1.

The arm 26 provides a support for a pair of grooved idler rolls 29 and30 disposed in spaced parallel relation to each other on a stud 3! whichis secured to the mounting bracket 32 carried by the arm. Adjacent tothe grooved idler rolls 2S and 30 is a heated drying drum 33 ofcantilever construction. The drying drum 33 is provided at its supportedend with an integrally formed flange 34. An annular rib 35 is formed onthe periphery of the drying drum 33 in spaced and generally parallelrelation to the flange 34 so as to provide therebetween a generallycylindrical surface 36. Extending outwardly toward the unsupported endof the drying drum 33 is a flared portion 31.

The drying drum 33 is mounted for positive rotation upon a mounting stud3B which is appropriately secured to the arm 26 and carries a gear 39. Asuitable driving means embodying the gear 39 and a meshing gear 38mounted on the driving shaft 4i extending lengthwise of the cordtreating apparatus l serves to rotate the drying drum 33 at a constantpredetermined rate. The drying drum 33 is heated as by means of aninternally disposed electrical resistance unit (not shown) ofconventional design which employs electrical energy supplied through thewires 42 which are connected to a suitable source of electricity. Anyother suitable source of heat other than the electrical unit may beemployed.

The drying drum 33 operates in conjunction with a stretching cone 43 toprovide a predetermined path of travel for the cord 8 which embodies aplurality of spaced, generally helical turns of gradually increasingdiameter. The

stretching cone i3 is freely rotatably supported about a mounting stud al which is, in turn, secured to the arm 26.

From the stretching cone t3, the cord 8 is directed downwardly asindicated in Fig. 1 to a grooved guide vroll to freely rotatably mountedupon a conventional ring rail 46 which is mounted for reciprocation withrespect to a spool or bobbin 4'. on which the cord 3 is collected in theform of a package 48. The bobbin Al is supported by a vertical spindle4i! (see Fig. 8) and is driven by a belt 50 and a pulley 5! in a mannermore fully described hereinafter. The spindle as is supported in eachcase by a stationary spindle rail 52 which is in turn supported bybrackets 53 from the base portion 2 of the cord treating apparatus I. i

In order to facilitate the operation of the cord treating apparatus Iand to avoid the necessity of restoring the entire path of travel of thecord 8 about the several elements of the apparatus and in particular onthe cord manipulating devices 25 thereof, a stop-motion 53 is provided.The stop-notion 54 may take several different forms, but is hereillustrated as embodying among other things, a feeler 55 for contactingthe cord. The feeler 55 has a bent portion 56 at one end thereof forcontact with the cord 3 as it passes between the pigtail guides ll andit in the cord treating apparatus I. At the opposite end of the feeler55 is disposed a bent portion 51. The feeler 55 is pivotally mounted ona boss portion 53 in the manner illustrated in Figs. 1, 3, and 4 so asto be free to assume a generally vertical position in the event that thecord 8 should break or the supply should run out.

lhe bent portion 5? of the feeler 55 is arranged to engage a slottedopening 59 in the trigger to. The trigger 60 is secured to the slidablerod 6|. The rod 5! is mounted for axial movement in a horizontal planeon the blocks 62 and 63 mounted upon the angle member 9 and the support23, respectively. Adjacent the trigger B0 on the slidable rod 6| isdisposed a collar B 3 and a compression spring 55 which is disposed inbiasing relation between the collar and the block 63 on the support 23which affords an abutment for the spring.

The trigger 69 is held in vertical position with respect to the slidablerod 6| as by means of a slotted guide member 66 secured to the block'53. The trigger 66 is freely slidable in the slotted opening formed inthe guide member 56. The spring is retained in compression between thecollar 64 and the block 63 when the feeler 55 is in operating relationand retained by the cord 8 as it passes through the pigtail guides H andI8. The relationship of the several elements herein described is bestillustrated in Fig. 3 of the drawings.

The slidable rod 3| is provided at its end adjacent the block 63 with anenlarged end portion 61 providing a shoulder 68 thereon which limits thelateral movement of the slidable rod 6i in its blocks 62 and 33. Theenlarged end portion 6'? has a counterbore E3 in one end thereof as bestshown in Fig. 7 of the drawings. This counterbore 69 houses the keeperHi, the stem portion H of which extends into the counterbore. The stemportion H of the keeper in is inserted in a compression spring H with apin 33 extending through a slot 74 in the end portion 61, serving toretain the keeper it in place therein against the action of the spring.

When the stop-motion 54 is in operative relaguides I7 and i8.

tion as shown in Fig.3 of the drawings, the face of the keeper Wis 'in'contact with a pin in the 'cam member 16 and serves to retain the latterin the position illustrated as-longas the supply of the cord 8 in thecord treating apparatus l'is uninterrupted. The cam member 16 isadvantageously mounted in pivotal relation in a mounting boss F1 on thearm'26 so as to be free to rotate in a vertical'plane when the keeper H1is moved laterally by the action of the slidable rod 6| in a mannerhereinfater to be described.

The cam member 16 is provided with a cam surface 18 and an adjacentportion having a plurality of teeth 19 in the nature of a segmental gearfor meshing engagement with the teeth of a gear 80. The gear 80, whichis mounted on the longitudinal drive shaft 4|, is disposed closelyadjacent to the driving gear 49 mounted thereon. The gear 80 isconstructed with a pair of spaced cam surfaces 8| for contact with thecam surface 18 of the cam member 16 after the latter has been rotatedthrough a Vertical plane by the meshing of the teeth 19 with the teethof the gear 80.

Suitable adjustment features may be provided for the positive locationof theswinging arm 25 to insure proper meshing of the teeth of the gear39 with the driving gear 40 on the shaft 41.

Such adjustment features include a stud bolt 82 which is threadedthrough an internally threaded hole in the boss portion 83 on thesupport 28. A similar adjusting stud bolt 84 is threaded into aninternally threaded hole in the arm 25 for the purposes of providing anadjustable stop for the cam member 16 when the flat surface 85 thereonis rotated about into contact therewith.

The keeper it is bent at its uppermost portion 86 so as to provide aslight relief for the pin '75 when the cam member 16 has been rotated toits uppermost limit, thereby bringing the flat undersurface 85 thereoninto contact with the stud 84 on the arm 26. A handle portion 87 at the'free end of the arm 25 facilitates the manual adjustment of the positionof the arm by the operator in the course of operation of the threadmanipulating apparatus I.

The cord treating apparatus i, just described, is threaded up bybringing th end of the cord 8 from the supply package I through thepigtail The cord 8 is then directed along a predetermined path over andaround a series of grooved idler rolls l2, l3, l4, and

I5 from one of which, in this case the roll 1 3 the cord is advanced tothe idler roll 19. The cord 8 is next passed over and in contact withthe surface of a Scotch roll which dips into the supply of treatingliquor 2|, thence over the wiper 24, and back to the grooved idler rollsI2, [3, Land [5.

The cord 8 now leaves the treatingportion of the cord treatmentapparatusIv and is directed to the several cord manipulating devices 25. Here thecord 8 is subjected to a predetermined amount of heating and stretching.From this stage of treatment, the cord passes next to the wind-up stageas illustrated in Fig. 1 of the accompanying drawings where the finishedand treated cord 8 is collected in the form of a package 48 on a rotatinbobbin 41.

The path of travel of cord 8 described above represents only one ofseveral through which the cord may be manipulated to produce the desiredfinished product. It will be readily understood that since the path ofcards is tor tuous and requires'a considerable expenditure of time andskill on the part of the-operator in threading up the cord treatingapparatus 1,- any break in the cord 8 or run-out of the supply package 1would cause considerable waste and require frequent time "consumingrethreading operations. Such stoppagesultimately result increased costsfor the entire cord treating operation.

Of even greater importance is the factthat the let-off, treating,heating and stretching-and wind-up steps shown comprise but one unit ofa complete cord treatingapparatus I. The cord treating apparatus Iusually contains a battery of from fifty to one hundred such units andany loss of time resulting from rethreading operations or cord wastagewould necessarily be multiplied many times in the course of the normaloperation of the cord treating apparatus.

It will be noted that the stop-motion 54'has not been rendered operableuntil the initial threading operation has been completed. Uponcompletion of the threading operation, the stopmotion 54 is placed inoperable relation by shifting the segment of the cord 8 passing betweenthe two pigtail guides H and 18 to one side far enough to permit thebent portion 56 of the feeler 55 to be positioned as shown in Figs. 2and 3. The cord 8 is then permitted to return to its normal position incontact with'the bent portion 55 of the feeler 55. The feeler 55 remainsbiased in the position shown until the cord 8 breaks or an end runs outreleasing the biasing efiect which it exerts upon the bent portion 56 ofthe feeler.

It will be understood that asllong as'a driving pull is maintained onthe cord 8 by the cord manipulating apparatus 25 and a sufficient.supply of the cord is present in the supply package I, the feeler 55will be retained in the slightly tilted position illustrated in Fig. 3.As a result of this restrained position of the feeler 55, the rod 6|will be biased in the direction of its longitudinal axis, therebycompressing the spring 65. The keeper it! will contact the pin 15 of thepivoted earn it holding it temporarily in the position shown in Fig. 3.

It will be understood'that .as long as the cord 8 remains unbroken orthe supply package '7 does not run out before it can be replaced by theoperator with a new package and the cord ends 8 tied together, thestop-motion unit 54 will remain in the position illustrated in"Fig."'3without affecting the cord path or the treating operations describedabove. Breakage of the cord seldom occurs, but a supply failure may bequite frequent.

In the event that the cord 8 runs out or breaks anywhere in the threadcircuit from the let-off to the-wind-up of the cord treating apparatusl, the restraining action'of the taut cord is instantly removed from thebent poit'ion'BB 'of the feeler '55. Due to'it's counterbalancedsuspension, the feeler 55, temporarily biased in'tilted relation, willreturn to a vertical position. The compression is thus removed fromthespring 65, and. the rod BI is shifted along its longitudinal axis in thedirection indicated by the arrow in Fig. 3, withdrawing the enlargedportion 67 on said rod housing the spring 12, pin 13,stem.portion H, andkeeper 10 (see Figs. 4 and '7).

The purpose of the-spring 12 in the assembly shown in Fig. 7 is toinsure a smooth operation of the stop-motion-unit 54 when sucha cordbreakage or run-out as described above occurs. While the feeler 55 isstill restrained by the pressure contact of the cord 8 on the bentportion 56 thereof, both spring 12 and spring 65 are compressed althoughthe release of spring I2 would be opposite to that of the spring 65.Thus, the spring 12 has a tendency to delay or hold back slightly theshiftable movement of the keeper I9 and consequently restrains themovement of the cam member I6 through the contact of the keeper I withthe pin I5.

When the compression has been removed from the spring I2 and it hasextended to its full length or at least to a point where it is overcomeby the weight of the pivoting cam member 16 with the retraction of therod BI, the cam member swings downwardly in a smooth and steady manner.The teeth 19 of the cam member 16 now engage the teeth of the gear 80.When this occurs, the gear 80 being driven by the shaft 4I rotates thecam member I6 until the cam surfaces 79 thereon contact the cam surfacesof the gear 80. The cam member 15 continues to rotate until it assumesthe position shown in Fig. 4.

This rotation of the cam member I6 against the cam surfaces 8| of thegear 80 results in the arm 26 pivoted at 27 being raised to the positionshown in Fig. 4. This causes the gear 39 to be disengaged from the gear40 in the driving shaft 4|, thereby stopping the rotation of the drivingdrum 33. During the rotation of the cam member 16 the spring I2 againcomes into play. When the cam member I6 is in its neutral position, thespring 12 is in its free or uncompressed position. While the cam member56 is moving toward the position shown in Fig. l, the pin 15 remains incontact with the keeper I0, thereby compressing the spring 72.

When the cam member I6 reaches the uppermost extremity of its path oftravel, as shown. spring I2 again releases to enable the bent portion 86of the keeper 10 to come into contact with the pin I5. The relativelyslight pressure exerted by the spring 12 on the keeper I0 tends toassist in holding the cam member 76 in its elevated position until theoperator has threaded up the cord treating apparatus I and again resetthe stop-motion unit 54 in the manner previously described.

As soon as the gear 39 is disengaged from the gear 40 by the pivoting ofthe arm 26 about its mounting on the rod 21, the positive feed of thecord 8 from the cord manipulating devices 25 to the bobbin 2'! ceases.The tension induced in the cord 8 by the rotation of the bobbin 4'! inbuilding the package 48 is very slight by reason of the fact that thebobbin is only frictionally driven by the pulley I. This frictionaldrive is accomplished through the use of a pair of facings or disks 88and 89 of fiber or other similar material secured to the base of thebobbin 4] and the top of the pulley 5I by means of the screws 90 and 9|,respectfully.

Since the bobbin 4'! is only frictionally driven from the pulley 5I, theseveral generally helical turns of the cord 8 encompassing the drivingdrum 33 and the stretching cone 43, as well as the multiple cord loopson the several grooved idler rolls I2, I3, I4, I5, 29, and 30, serve toproduce a snubbing action which prevents the end of the cord 8 frombeing drawn completely through the cord treating apparatus I. Thisstoppage of the cord 8 from drifting or releasing itself is a veryimportant feature of any stop- 8 motion device in that unless this canbe satisfactorily achieved, it becomes necessary to rethread the entireapparatus involving loss of time and expenditure of labor.

The feeler 55 of the stop-motion 54 may advantageously take the modifiedform illustrated in Figs. 9, 10, 11, and 12 and identified by thereference numeral 92. The lowermost end of the feeler 92 and the meansfor its connection to the rod 6| are identical to those employed withthe feeler 55 previously described. The present description will,therefore, be confined to the differences in feeler 92 which are notpresent in its counterpart element 55.

The feeler 92 is pivotally mounted as by means of the bolt 93, washers94, 95 and the nut 96 from a bracket 91 suitably secured to the supportII. The feeler 92 is provided with a projecting arm 98 extendingoutwardly from and adjacent the supported end of the feeler. A groovedidler roll 99, which is generally similar to the other idler rolls I2 toIE, inclusive, is freely rotatably mounted on the uppermost extremity Iof the arm 98, being retained thereon by a washer iill and a nut I02threaded on the extremity cooperating with the collar I03 (see Fig. 12).

In normal operation of the cord treating apparatus I, the path of travelof the cord 8 on the apparatus is modified only in the respect that asegment of the cord is brought upwardly from the idler rolls I2 to I5,inclusive, to permit it to pass over the idler roll 99 on the arm 99 ofthe feeler 92. This additional length of cord 8 employed in placing thefeeler 92 in operative position affords a somewhat longer tail portionin the event of a supply run-out. The longer tail portion insures thatthe stop-motion 54 will operate to stop the Withdrawal of the cord 8before the end passes over the idler 99. Thus, it is seldom necessary torethread any of the cord path in the cord treating apparatus I.

From an inspection of the cord path illustrated in Fig. 9, it will benoted that as soon as the cord supply runs out, the verticallyprojecting portion of the cord 3 will drop. This action relieves thebiasing effect of the cord 8 passing around the idler 99 and the feeler92, being counterbalanced, pivots about the bolt 93 and moves instantlythrough the path indicated by the dotted arrow to a substantiallyvertical position. This travel of the feeler 92, as we have alreadyseen, sets in motion all of the related elements of the stopmotion 54,disengaging the drive for the cord manipulating devices 25 and acting tosnub the cord 8 so as to stop it from being Wound up on the bobbin 47.

In addition to the steps previously described, the travel of the feeler92 through the arcuate path indicated by the dotted arrow in Fig. 9 putsan additional brake on the cord 8. A brake ele ment I04 is secured toand supported by the bracket I05 mounted in suitable fashion at oradjacent the uppermost end of the support II. The concave surface of thebrake element I94 is provided with a facing I09 of suitable frictionmaterial which may be of the order of rubber, leather, or other similarsubstances.

As will be seen from Fig. 9, when th lower end of the feeler 92 swingsin the direction indicated toward the vertical position, the uppermostextremity I09 of the arm 98 on the feeler will swing in the oppositedirection (see arrow). This travel of the uppermost extremity I90 of thearm 98 will bring the idler roll 99 mounted thereon into contact withthe facing I06 in the c ncave surface of theb ake. element 1.04.. heaction of the vbrake element l M re ist ring with the roove inthe'idlerroll. 99.2 .1135 the end o the. ord. 5 in the manner shown inig.

While certain representativeembo im s a d tails hav been shown fo h purpe f l ustrating the, invention, it will be apparent to those skilled inthis art that Yari us cha s a modifications may e .made herein Withouparting from the spirit or scope of the inven-. tion.

We claim:

1. Ap aratus for the treatment of 00rd,,thread, and other similarfilamentous material of substantially continuous lengths comprisingacord supply; a cord manipulating device which exerts tension on thecord as it is withdrawn .from the cord supp y; means for driving thecord manipulating device; a cam for selectively disengagingvthe cordmanipulating device from the driving means and temporarilymaintainingthem in disengaged relation; ashiftably mounted feelerelement arranged to contact and be retained in position by the cord asit passes between the cordsupply and the cord manipulating device; meanson the driving means for actuating the cam; and a trip mechanism whichis operated by the feeler element in the event of relaxation of the cordtension thereon to release the cam for engagement with the cam actuatingmeans.

2. Apparatus for the treatment of cord, thread, and other similarfilamentous material of substantially continuous lengths comprising acord supply; a cord manipulating device which exerts tension on the cordas it is withdrawn from the cord supply; means for driving-the cordmanipulating device; a cam for selectively disengaging the cordmanipulating device from the driving means and temporarily maintainingthem in disengaged relation; a counterweighted feeler element forcontacting the cord between the cord supply and the cord manipulatingdevice, said feeler element being temporarily biased against itscounterweight by the cord; means on the driving means for actuating thecam; and a trip mechanism. which is operated by the feeler element torelease th cam for driving engagement with the cam actuating means.

3. Apparatus for the treatment of cord, thread, and. other similarfilamentous material of substantially continuous lengths comprising acord supply; a cord manipulatingdevice which exerts tension on the cordas it is withdrawn from the cord supply; means for driving the cordmanip ulating device; a cam for selectively disengaging the cordmanipulating device from the driving means and temporarily maintainingthem in disengaged relation; a counterweighted feeler elementforcontacting the cord between the cord supply and the cord manipulatingdevice, said feeler element being temporarily biased against itscounterweight by the cord; means on the driving means for actuating thecam; a slidable member for retaining the cam ininoperative relat onwithresp c t the cam actuatin -means; andl hae c nnectin t e slida e emto the feeler element.

4. Apparatus for the treatment of cord, thread, and other similarfilamentous material of substantially continuous lengths comprising acord supply; a cord manipulating device which exerts tension on the cordas it is withdrawn from the cord supply; means for driving the cordmanipulating device; a cam jor selectively disengaging the cordmanipulating device from th driving means and temporarilymaintainingthem indisengaged relation; a counterweighted f eler 516?ment for contacting the cord between thecord. supply and the, cordmanipulating device, said feeler element being temporarily biasedagainst its counterweight by the cord; means on the driving means foractuating the cam; a slidable memher for retaining the cam ininoperative relation with respect to the cam actuating means; means onthe slidable member for biasing it in opposition to the. action of thefeeler element; and link-. age connecting the slidable member to thefeeler element.

5. In an apparatus for th manipulation of cord, thread, and othersimilar filamentousmaterial of substantially continuous lengthsembodying a cord manipulating device and means. for. driving the cordmanipulating device, a stop motion comprising means for disengaging thedriving means from the cord manipulating de vice; means on the drivingmeans for actuating the disengaging means; and means the operation ofwhich is initiated by the cord for .rnaintaining the disengaging meanstemporarily in inoperative relation with respect to the actuating means.

6. Apparatus for. the treatment of cord,thread, and other similarfilamentous material of-substantially continuous lengths comprising acord supply; a cord manipulating device which exerts tension on the cordas it is withdrawn from the cord supply; means for driving the cordmanipulating device; means so constructed and arranged that it isactuated upon relaxation of the; tension in the cord passing between thecord supply and the cord manipulating device for selectivelydisengagingthe cord manipulating device from the driving means andtemporarily maintaining them in disengaged relation; and means disposedadjacent the contacting means for snubbing the cord against thecontacting means on the disengagement of the cord manipulating devicefrom the driving means. v

7. A paratus for the treatmentof cord, thread, and other similarfilamentous material of substantially continuous lengths comprising acord supply; a cord manipulating device which'lexerts tension on thecord as it is withdrawn from the cord supply; means fordriving the cordmanipulating device; means for contacting the cord as it passes betweenthe cord supply and the cord manipulating device, said contactingmeansbeing operable upon relaxation of the tension in the cord; meansactuated by the contacting means for selectively disengaging the cordmanipulating device from the driving means and temporarily maintainingthem in disengaged relation; vand means disposed adjacent the contactingvmeans for snubbing the cord against the contacting means on thedisengagement of the cordmanipulating device fromthe driving means.

- 8. Apparatus for the treatment of cord, thread, and other similarfilamentous material of substantially continuous lengths comprising acord supply; a cord manipulating device which exerts tension on the cordas it is withdrawn from the cord supply; means for driving theco 'dmanipulating device; a cam for selectively disengaging the cordmanipulating device fromthe driving means and temporarilymaintaining.them in disen a ed re t mea d s sed n the path of the cord passingbetween the cord supply and the cord manipulating device for contactingthe cord, said contacting means being operable upon relaxation of thetension in the cord to actuate the cam; and means adjacent thecontacting means for snubbing the cord against the contacting means whenthe tension on the cord is relaxed.

9. Apparatus for the treatment of cord, thread, and other similarfilamentous material of substantially continuous lengths comprising acord supply; a cord manipulating device which exerts tension on the cordas it is withdrawn from the cord supply; means for driving the cordmanipulating device; a cam for selectively disengaging the cordmanipulating device from the driving means and temporarily maintainingthem in disengaged relation; a shiftably mounted feeler element arrangedto contact and be retained in position by the cord as it passes betweenthe cord supply and the cord manipulating device; a trip mechanismoperable on the shifting of the feeler element in the event ofrelaxation of the cord tension against the feeler element to release thecam; and means adjacent the feeler element for snubbing the cordthereagainst whenever the cord fails to restrain the shiftable movementof the feeler element.

1%. Apparatus for the treatment of cord, thread, and other similarfilamentous material of substantially continuous lengths comprising acord supply; a cord manipulating device which exerts tension on the cordas it is withdrawn from the cord supply; means for driving the cordmanipulating device; a cam for selectivel disengaging the cordmanipulating device from the driving means and temporarily maintainingthem in disengaged relation; 9. shiftably mounted feeler elementarranged to contact and be retained in position by the cord as it passesbetween the cord supply and the cord manipulating device; means on thedriving means for actuating the cam; a trip mechanism which is operatedby the feeler element in the event of relaxation of the cord tensionthereon to release the cam for engagement with the cam actuating means;and a brake element for engaging the cord in contact with the feelerelement on the failure of the cord to restrain the shiftable movement ofthe feeler element.

11. Apparatus for the treatment of cord, thread, and other similarfilamentous material of substantially continuous lengths comprising acord supply; a cord manipulating device which exerts tension on the cordas it is withdrawn from the cord supply; means for driving the cordmanipulating device; a cam for selectively disengaging the cordmanipulating device from the driving means and temporarily maintainingthem in disengaged relation; a counterweighted feeler element forcontacting the cord between the cord supply and the cord manipulatingdevice, said feeler element being temporarily biased against itscounterweight by the cord; means on the driving means for actuating thecam; a trip mechanism which is operated by the feeler element to releasethe cam for driving engagement with the cam actuating means; and a brakeelement for engaging the cord in contact with the ieeler element whenthe counterweight thereon overcomes the bias of the cord.

12. Apparatus for the treatment of cord, thread, and other similarfilamentous material of substantially continuous lengths comprising acord supply; a cord manipulating device which exerts tension on the cordas it is withdrawn from the cord supply; means for driving the cordmanipulating device; a cam for selectively disengaging the cordmanipulating device from the driving means and temporarily maintainingthem in disengaged relation; a counterweighted feeler element forcontacting the cord between the cord supply and the cordmanipulatingdevice, said feeler element being temporarily biased againstits counterweight by the cord; means on the driving means for actuatingthe cam; a slidable member for retaining the cam in inoperative relationwith respect to the cam actuating means; linkage connecting the slidablemember to the feeler element; and a brake element for engaging the cordwhile in contact with the feeler element when the counterweight thereonovercomes the bias of the cord.

13. Apparatus for the treatment of cord, thread, and other similarfilamentous material of substantially continuous lengths comprising acord supply; a cord manipulating device which exerts tension on the cordas it is withdrawn from the cord supply; means for driving the cordmanipulating device; a cam for selectively disengaging the cordmanipulating device from the driving means and temporarily maintainingthem in dis engaged relation; a counterweighted feeler element forcontacting the cord between the cord supply and the cord manipulatingdevice, said feeler element being temporarily biased against itscounterweight by the cord; means on the driving means for actuating thecam; a slidable member for retaining the cam in inoperative relationwith respect to the cam actuating means; means on the slidable memberfor biasing it in opposition to the action of the feeler element;linkage connecting the slidable member to the ieeler element; and abrake element for engagement with the feeler element to snub the cordthereagainst when the counterweight on the feeler element overcomes thebias of the cord thereon.

14. In an apparatus for the manipulation of cord, thread, and othersimilar filamentous material of substantially continuous lengthsembodying a cord manipulating device and means for driving the cordmanipulating device, a stop motion comprising means for disengaging thedriving means from the cord manipulating device; means on the drivingmeans for actuating the disengaging means; means the operation of whichis initiated by the cord for maintaining the disengaging meanstemporarily in inoperatve relation with respect to the actuating means;and means cooperating with the last-mentioned means for snubbing thecord when the disengaging means is operated.

RAYMOND E. SOLLIDAY. SAMUEL A. STEERE.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 2,185,245 Cotchett Jan. 2, 1940 2,212,691 Kershaw Aug. 27,1940 2,226,135 Newton et al Dec. 24, 1940 2,263,278 Senna Nov. 18, 1941FOREIGN PATENTS Number Country Date 436,857 Great Britain Oct. 21, 1935476,170 Great Britain Nov. 29, 1937

